ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income	$ 90,455	$ 91,034
Income tax expense	4,155	4,402
Other expense	2,648	2,248
NET INCOME	20,085	23,401
Amount Reclassified From Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
NET INCOME	(397)	(439)
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) | Held-to-Maturity Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income	(490)	(496)
Income tax expense	103	114
NET INCOME	(387)	(428)
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) | Available-for-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net securities gains (losses)		(46)
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) | Defined Benefit Pension Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	3	4
Other expense	(13)	(15)
NET INCOME	$ (10)	$ (11)